To increase the production, many factories have some new techniques.
| A．brought out | B．brought in | C．brought back | D．brought about |
QQ, you can chat with your friends, makes communication easy.
| A．as | B．which | C．that | D．where |
My daughter, job requires her to do a lot of travelling, is always away from home.
| A．which | B．that | C．whose | D．where |
The school has developed an online system students can choose their own teachers.
| A．which | B．that | C．whom | D．where |
“Youth”is regarded by many people as a time in their life
fun, passion, and imagination seem limitless.
| A．that | B．which | C．when | D．where |
It will be long she sees Mr. White again at Beijing, business has just started in Switzerland.
| A．after; who | B．since; who |
| C．when; whose | D．before; whose |